Collinder 221
(VDBH 96; NGC 3255; OCL 817; vdBergh-Hagen 96; ESO 127 20; FSR 1546; MWSC 1804)
Summary
Collinder 221 is a rich, very dense object of very high C3 quality. It is located at a large distance from the Sun, below the mid-plane. It is moderately studied in the literature.
Positions
| Reference | RA | DEC | Plx | pmRA | pmDE | Rv |
|---|---|---|---|---|---|---|
| Dias et al. (2002) | 156.629 | -60.677 | – | -4.4 | -2.08 | – |
| Cantat-Gaudin et al. (2018) | 156.635 | -60.675 | 0.12 | -5.913 | 3.322 | – |
| Bica et al. (2019) | 156.637 | -60.673 | – | – | – | – |
| Soubiran et al. (2018) | 156.635 | -60.675 | – | – | – | 22.03 |
| Cantat-Gaudin et al. (2020) | 156.635 | -60.675 | 0.12 | -5.913 | 3.322 | – |
| Dias et al. (2021) | 156.633 | -60.676 | 0.116 | -5.905 | 3.314 | – |
| Hunt & Reffert (2023) | 156.637 | -60.672 | 0.155 | -5.887 | 3.313 | 12.109 |
| Cavallo et al. (2024) | 156.637 | -60.674 | 0.155 | – | – | – |
| Hunt & Reffert (2024) | 156.637 | -60.672 | 0.155 | -5.887 | 3.313 | 12.109 |
| Almeida et al. (2025) | 156.633 | -60.676 | – | – | – | – |
| Hu & Soubiran (2025) | 156.637 | -60.673 | – | – | – | – |
| UCC | 156.635 | -60.674 | 0.14 | -5.898 | 3.32 | 21.178 |
Estimated members
Explore data in Colab
Fundamental parameters
| Reference | Values |
|---|---|
| Dias et al. (2002) | E(B-V)=0.25, Dist=1445.0, Age=8.3 |
| Cantat-Gaudin et al. (2018) | dmode=6703.9 |
| Soubiran et al. (2018) | dmode=6703.9 |
| Cantat-Gaudin et al. (2020) | AVNN=0.92, DistPc=5469.0, AgeNN=8.35 |
| Dias et al. (2021) | Av=1.028, Dist=4432, logage=8.712, [Fe/H]=0.007 |
| Hunt & Reffert (2023) | AV50=1.166, diffAV50=1.704, MOD50=13.694, logAge50=8.419 |
| Cavallo et al. (2024) | AV50=1.31, dMod50=12.76, logAge50=8.86, [Fe/H]50=-0.43 |
| Hunt & Reffert (2024) | MassJ=1872.61, MassTot=1978.07 |
| Almeida et al. (2025) | AV=1.028, Dist=4432, logAge=8.712, MassRk=892.0 |
| Hu & Soubiran (2025) | MA22=-0.19, MA23f=-0.55, MA23g=-0.18, MZ23=-0.26, MK24=-0.28, MF24=-0.4 |
Search coordinates in Bayestar19